Please help will give brainliest

Answer:

10 = a

Step-by-step explanation:

To find this answer, first you need to distribute 4 times a and 4 times 5, since this is in parenthesis. You should get 4a + 20 = 10 + 4a. From there, you can subtract 4a from both sides of the equal sign, which will cancel out one of the 4a's. You should be left with 20 = 10 + a. Finally, you can subtract 10 from both sides of the equal sign and get 10 = a.

Answer:

the answer is 67.4545454545

Step-by-step explanation:

Answer: D- 30

Step-by-step explanation:

Answer:

x = 21

Step-by-step explanation:

Step 1: Write out equation

-5x - 72 = -12x + 75

Step 2: Add 5x to both sides

-72 = -7x + 75

Step 3: Subtract 75 on both sides

-147 = -7x

Step 4: Divide both sides by -7

21 = x

Step 5: Rewrite

x = 21

Answer:

the answer is 97 if you're rounding but 99 if you want exactly 95

Step-by-step explanation:

if you add all the previous grades up it'll add up to 376 and then when you add 97 and then divide it by 5 (the total amount of assignments) it'll add up to 94.6 which rounds up to a 95 unless you want it a 95 exactly which would probably be 99

Answer:

  99

Step-by-step explanation:

Relative to his desired average, Pablo's scores are ...

  -6, +3, +2, -3

In order for his average grade to be 95, the sum of all of these deviations and the one on his last test must be zero

  -6 +3 +2 -3 +x = 0

  x = 4

Pablo must get a 95+4 = 99 on his last test to have a 95 average.

Answer:

the probabiility that the selected man relies on a GPS system is 0.494

Step-by-step explanation:

From the given information:

Let X be the event that selected person is a man

Let Y be the event that selected person is a woman

Let Z be the event that selected relies or use GPS system.

So;

the following probabilities are:

P(X) = 0.50

P(Y) = 0.49

P(Z) = 0.77

P(X ∩ Z) = 0.38

P(Y ∩ Z) = 0.38

Now;

if the selected person is a man, the probability that he relies on a GPS system can be determined as follows:

[tex]P(Z|X) = \dfrac{P(X \cap Z)}{P(Z)}[/tex]

[tex]P(Z|X) = \dfrac{0.38}{0.77}[/tex]

[tex]\mathbf{P(Z|X) =0.494}[/tex]

Thus, the probabiility that the selected man relies on a GPS system is 0.494

Answer:

0.5

Step-by-step explanation:

8 is bigger than 5 so 4 rounds up

Answer:

X2=8/4

X=1

and thats whats it equal too.

Answer:

Step-by-step explanation:

In this problem, we are expected to estimate the number of bricks he can set in 8 hours.

let us convert hours to minutes we have

60 min make 1 hour

x min make 8 hours

cross multiply

x= 60*8

x= 480 min

We are assuming the same rate with which he sets 2.5 brick is the same as the rate with which he will set bricks for the 8 hours windows

so if the bricklayer sets

2.5 bricks in 1min

y bricks in 480 min

Cross multiply we have

y=2.5*480

y= 1200  bricks

hence in 8 hours, he will set 1200 bricks

Answer: 59

Step-by-step explanation:

Answer:

59

Step-by-step explanation:

Answer:

The highest common factor of 98 and 182 is 14

Answer:

A.D.E

I GOT IT RIGHT IN EDG

A line is a one-dimensional shape that is straight. The correct options are A, D, and E.

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely.

Given that a vertical line has points C, E, and F from top to bottom. 2 lines extend from point E. One line extends to point A and another extends to point B. Angle A E C is 90 degrees. Also, Ray EB bisects ∠CEA.

Therefore, the diagram for the given condition can be made as shown below.

Now, the options that are correct are:

Hence, the correct options are A, D, and E.

The complete question is:

A vertical line has points C, E, and F from top to bottom. 2 lines extend from point E. One line extends to point A and another extends to point B. Angle A E C is 90 degrees.

Given that Ray E B bisects ∠CEA, which statements must be true? Select three options.

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Answer:

Parker>Richard

Step-by-step explanation:

So we know Parker has 12 marbles(blue) and Richard has 3/4(.75) of that.

You do not need multiplication as the answer is above this

Come on look above, what do you see?

Richard has .75 or 75% or 3/4 but not 1 or higher so he has less

Answer: Parker>Richard

The number of marbles Parker has > the Number of marbles Richard has.

Parker has 12 blue markers.

Richard has 3/4 of the blue marbles that Parker has.

A fraction represents a part of a whole or, more generally, any number of equal parts.

For example, when We say 3/4, it means there will be 4 equal parts out of which we are considering 3 parts.

Same way, Richard has 3/4 of the blue marbles that Parker has.

This means Parker has 4 equal parts of 12 marbles.

This means Parker has 4 equal parts with each part consisting of 3 marbles.

Since each part contains 3 marbles

So 3 parts will contain 3+3+3 =9 marbles

Since Richard has 3 parts of the blue marbles that Parker has.

This means Richard has 9 marbles.

Therefore, the Number of marbles Parker has > the Number of marbles Richard has.

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Answer:

Step-by-step explanation:

1. perp. 1/2

y - 2 = 1/2(x - 4)

y - 2 = 1/2x - 2

y = 1/2x

2. 2y = -4x + 8

   y = -2x + 4

   perp. 1/2

  y - 2 = 1/2(x - 6)

  y - 2 = 1/2x - 3

  y = 1/2x - 1

3. perp. -3/2

 y - 2 = -3/2(x - 2)

  y - 2 = -3/2x + 3

   y = -3/2x + 5

4. perp. -4

y - 8 = -4(x - 2)

y - 8 = -4x + 8

y = -4x + 16

Answer:

.101265823

Step-by-step explanation:

Answer:

22 in.

Step-by-step explanation:

Perimeter = Length + Length + Breadth + Breadth

Perimeter = 7 in. + 7 in. + 4 in. + 4 in.

Perimeter = 22 in.

Answer:

The missing term is 3x

Step-by-step explanation:

Hope that helped!!

Answer:

b

Step-by-step explanation:

i did the problem

Answer:

the answer is b 5x^2-2x-8

Answer:

x≤9

Step-by-step explanation:

because im cool

Answer:

Step-by-step explanation:

x - 15 ≤ -6 (move the constant to the right)

x ≤ - 6 + 15 (calculate)

x ≤ 9

Answer: 20 kisses

Step-by-step explanation:

given data:

number of cousins at the family reunion = 5

each cousing kissing each other just once.

if one cousin kisses everybody round that would be

= 1 * 4

= 4 kisses.

4 kisses from each cousins * number of cousins at the family reunion.

= 4 * 5

= 20 kisses.

in total there were 20 kisses at family reunion

Using the principle of combination, the number of kisses given in all by the five cousins is 10

Using the relation :

Substituting the values into the relation :

[n(n-1)] ÷ 2

[5(5-1)] ÷ 2

(5 × 4) ÷ 2

20 ÷ 2

= 10 kisses

Hence, the Number of kisses exchanged in all is 10.

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Answer: (2,-3)

Step-by-step explanation:

To solve by elimination method, we need to choose which variable to eliminate. Let's eliminate y. We need to make sure that the y coefficients in both equations are equal. To do that, you multiply the first equation by 5 and the second by 9.

(11x + 9y = -5)5        [multiply entire equation by 5]

(7x + 5y = -1)9          [multiply entire equation by 9]

--------------------------------------------------------------------------------------------------------

55x+45y=-25

63x+45y=-9

Now that the y are both the same, we can eliminate y by subtracting both equations and solve.

-8x=-16                     [divide both sides by -8]    

x=2

Now that we have x=2, we can plug that in to any equation to find y.

7(2)+5y=-1                [multiply]

14+5y=-1                   [subtract both sides by 14]

5y=-15                      [divide both sides by 5]

y=-3      

With the y-value, we know that the answer is (2,-3).

Answer: 5 or 55

Step-by-step explanation:

The remainder is 98 when 7842 is divided by 176 after using the arithmetic operation.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

We have two numbers:

7842 and 176

7842 is divided by 176

Mathematically,

= 7842 ÷ 176

We can write the above number expression in the form of a fraction:

= 7842/176

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

The remainder will be:

Quotient = 44

Remainder = 98

Thus, the remainder is 98 when 7842 is divided by 176 after using the arithmetic operation.

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Answer:

-16/6

Step-by-step explanation:

2x-8÷x+10

2(-4)-8÷-4+10

-16÷6

Answer:

Step-by-step explanation:

Given

Formula for continuous compound interest:

Answer:

A≈20911

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

if both of them have 5 without a picture they most likely are intercepted at the number 5

Answer:

a

The 95% confidence interval is [tex]1003 < \mu <1023[/tex]

b

Yes there is statistically significant evidence that students in Florida perform differently from other students in the United States

Step-by-step explanation:

From the question we are told that

   The population mean is  [tex]\mu = 1000[/tex]

   The sample size is  [tex]n = 453[/tex]

   The sample mean is  [tex]\= x = 1013[/tex]

    The standard deviation is [tex]s = 108[/tex]

Given that the confidence level is  95% then the level of significance is mathematically represented as

            [tex]\alpha = 100 - 95[/tex]

=>         [tex]\alpha = 5\%[/tex]

=>          [tex]\alpha = 0.05[/tex]

The critical value  for [tex]\frac{\alpha }{2}[/tex] obtained from the normal distribution table is          

          [tex]Z_{\frac{\alpha }{2} } = 1.96[/tex]

Generally the margin of error is mathematically represented as

         [tex]E = Z_{\frac{\alpha }{2} } * \frac{s}{\sqrt{n} }[/tex]

=>     [tex]E = 1.96 * \frac{108}{\sqrt{453} }[/tex]

=>      [tex]E = 9.946[/tex]

Generally the 95% confidence interval is mathematically represented as

           [tex]\= x - E < \mu < \= x + E[/tex]

=>         [tex]1013 - 9.946 < \mu < 1013 + 9.946[/tex]

=>         [tex]1003 < \mu <1023[/tex]

Given that the population mean(1000) is not within the 95% confidence interval for l for the average test score for students in Florida, then it means that there is statistically significant evidence that students in Florida perform differently from other students in the United States

Answer:

15

Step-by-step explanation:

4 |7 − n| + 5

Substitute n = 12

4 |7 − 12| + 5

4 |-5| + 5

Take the absolute value of -5, which is 5

4 * 5 +5

Multiply

20 -5

15

Answer:

( x - 1) ( 2x + 3)

Step-by-step explanation:

It's actually the other way round.

2x^2- + x - 3

( 2x^2 - 2x) + (3x-3)

2x ( x-1 ) + 3( x-1)

( x -  1)(2x+3)

Its the other way around

HOPE IT HELPED